The topic of the presentation is "The science and/or math behind poker". The audience will be expecting you to talk about science and/or math. If you talk about poker theory, strategy, or mastery, or anything else, then your audience will wonder when you will be getting to the point.

If you're going to talk about anything besides science and/or math, then you should definitely change the title to reflect that, and do so enough in advance that the target audience has a chance to find out and plan to attend. I don't assume that the audience that would want to attend a beginners strategy talk is the same audience that would want to attend a math/science talk.